Small Motor Issues for Tumbler, Need Electrical advise
- Thread starter nevanevan
- Start date
That won't work either. Those are shaded pole motors like the furnace motor so it runs at the same one speed unless it's a two speed version motor. In that case you have the option of two speeds. Trying to control it will result in the motor fighting to run at the right power and over heating quickly. Same reason the furnace fan motor can't be controlled.
It doesn't really. It's just that he's looking for a way to get it to the right speed. It needs to be geared down from the 1725 rpm of the motor shaft to something like 60 rpm for the tumbler drum. That's a gear ratio of 1725/60 or 29:1. To do this in one step if the output shaft is .5 inch like many furnace fans it could be pushed up against a drive wheel that is 14.5 inches in diameter for a one step reduction.
But if there's a key way on the shaft or if it slips a length of rubber fuel tubing could be pushed on over the shaft and this "tire" could drive against a wheel of some sort. If the rubber tubing increased the size to 3/4 inch on the motor then a drive wheel of 21 inches or so could be used. No gear boxes or flakey speed controls. Just a the drum set up with a big wheel and the motor with rubber tubing tire driving against it. For this sort of use a drum wheel made from 3/4 plywood would be just fine. Or a suitable size bicycle wheel with smooth tire would also work. The motor would be set up on a hinged plate such that the weight of the motor provides enough friction to obtain a solid lock against the driven wheel.
Sometimes the best projects are the ones that you tackle yourself. Again, I already have an excellent tumbler, just looking to change the motor. I spent time designing, and building this project with my Dad and it proved to work excellently, just looking to tweak small parts. The existing tumbler is below..............don't be so damn cheap and go purchase a real tumbler. I've had mine for decades and never had a problem with it...........hint, hint RCBS.
Also, stuff this B&*l#### quote. There has been excellent advise given so far on this thread, I am not so jaded as to not seek the advise of people that know more about a particular part of life and don't really want to burn my house down finding out the hard way. End rant Thanks again for everyones help
